Support for semicolon (;) in filename

[LorenzMichels]

I would like have support for a semicolon. My filenames (hundred of thousands) are like this "2023-02-23 16;29;20 - R5__0526.jpg". Because windows doesn't support colons in filenames (these are used for drive separators) I use a semicolon instead. Openstego can't cope with that.